IL3843 Datasheet, PDF (1/5 Pages) IK Semicon Co., Ltd – Fixed Frequency Current Mode PWM Controller

TECHNICAL DATA
Fixed Frequency Current Mode PWM Controller
IL3843
DESCRIPTION
Fixed frequency current-mode PWM controller. It is specially designed
for Off Line And DC-to-DC converter applications with minimal external
component. This integrated circuit features a trimmed oscillator for
precise duty cycle control. a temperature compensated reference, high
gain arror amplifier, current sensing comparator, and a high current
totempole output ideally suited for driving a power MOSFET.
Protection circuitry includes built in under-voltage lockout and current
limiting.
FEATURES
♦ Automatic Feed Forward Compensation
♦High Gain Totem Pole Output
♦Internally Trimmed Bandgap Reference
♦Undervoltage Lockout with Hysteresis
♦Low Start Up Current
♦Optimized for offline converter
♦Double pulse suppression
♦Current mode operation to 500KHz
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
IL3843
T_A=0° to +70°C
DIP-8
Rev. 01